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某220 kV架空线路地线断股故障分析

来源:电工电气发布时间:2021-03-26 10:26浏览次数:76
某220 kV架空线路地线断股故障分析
 
赵蓂冠1,王辉2,董新胜1,张小军1,岳云凯1,张振浩3,欧洋4
(1 国网新疆电力有限公司电力科学研究院,新疆 乌鲁木齐 830011;2 国网新疆电力有限公司昌吉供电公司,新疆 昌吉 831100;
3 国网新疆电力有限公司哈密供电公司,新疆 哈密 839000;4 国网新疆电力有限公司阿克苏供电公司,新疆 阿克苏 843000)
 
    摘 要:微风振动诱发的架空线路导地线疲劳断股等事故严重影响了线路安全。某220 kV架空线路在巡视中发现多处存在地线断股的缺陷,通过对该线路地线断股缺陷进行计算分析,得出该线路在防振措施及运维方面存在的不足,并给出合理的整改及防范措施。提出的针对架空地线的防振措施普遍适用于架空线路,即在后期维修期间安装防振锤时应缠绕铝包带,在设计和建设阶段选择和使用跟地线力学特性匹配的并且适合于地形的防振锤很重要,防振锤的安装位置和数量应合理选择、规范安装。
    关键词:架空地线;断股缺陷;防振锤;微风振动
    中图分类号:TM726.3     文献标识码:A     文章编号:1007-3175(2021)03-0041-04
 
Fault Analysis of Ground Line Broken Strands in 220 kV Overhead Line
 
ZHAO Ming-guan1, WANG Hui2, DONG Xin-sheng1, ZHANG Xiao-jun1, YUE Yun-kai1, ZHANG Zhen-hao3, OU Yang4
(1 State Grid Xinjiang Electric Power Co.,Ltd Electric Power Research Institute, Urumqi 830011, China;
2 State Grid Xinjiang Electric Power Co.,Ltd Changji Power Supply Company, Changji 831100, China;
3 State Grid Xinjiang Electric Power Co.,Ltd Hami Power Supply Company, Hami 839000, China;
4 State Grid Xinjiang Electric Power Co.,Ltd Aksu Power Supply Company, Aksu 843000, China)
 
    Abstract: Breeze vibration induced ground conductor of the overhead line fatigue broken strands and other accidents are seriously affect the essential safety of the line. In this paper, through the calculation and analysis of the defects of the ground wire broken strands in a 220 kV overhead line, the shortcomings of the line in earthquake prevention measures and operation and maintenance are obtained. Reasonable rectification and preventive measures are given. The anti-shock measures proposed in this paper are generally suitable for overhead lines, that is, the anti-vibration hammer should be wound with aluminum tape during the later maintenance period. It is very important to select and use the anti-vibration hammer which matches the mechanical characteristics of the ground wire and is suitable for terrain in the design and construction. The installation position and quantity of the anti-vibration hammer should be reasonably selected and standardized.
    Key words: overhead ground wire; fault defect; anti-vibration hammer; breeze vibration
 
参考文献
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